Chest drains are commonly used for patients who have undergone thoracic surgery the purpose of chest drains is to maintain cardiorespiratory function and hemodynamic stability by draining the pleural and mediastinal spaces of air, blood or other fluid. The most common complication are postoperative pulmonary complications which include massive lobar collapse due to mucus plugging of a central airway, Atelectasis, and a combination of one or more of these. Pulmonary care is an important part of the postoperative critical care nursing after thoracic surgery. To help in preventing pulmonary complications the patient is encouraged to using of incentive spirometer, breathing and coughing effectively support of incisional wound to maintain normal amount of oxygen in the blood, prevent the smallest part of the lung from collapsing and for effective removal of mucus from the lung. Early mobilization is effective in improving postoperative pulmonary outcomes. Therefore, the aim is to identify the Impact of implementing of standardized nursing care toward patient with a chest tube to reduce pulmonary complications after Thoracotomy. Controlled case study research design was used to conduct this research. This study was carried out at postoperative ICU in Assiut University Hospitals. The sample of this study was consisted of 60 patients, admitted to ICU after thoracotomy surgery. Tool used in this study consisted of an assessment sheet developed by the researcher for identifying impact of implementing of standard nursing care on prevention of postoperative pulmonary complication. This tool comprised four main parts: Part I:- socio-demographic and clinical data Part II: - Assessment hemodynamic state. Part III: - assessment of respiratory system and pain scale. Part IV:- assessment of infection and laboratory tests findings. The main results: Findings of the present study revealed that Significance decrease in sputum production (p<0.001) on study group versus control group. Shows highly significant decrease in pain score of study group on the 2^nd &3^rd day (p=0.005). Highly significant increase of pao2, sao2 on 2^ndday and3^rd day of study group (p<0.001). As regard to white blood count, the mean values of WBC concentration in the study group showed highly significant decrease (p<0.001) in 3^rd day of study group. Regarding to length of ICU stay were (3.27±1.202&5.23±1.75) days with highly significant decreased in study group versus control group (p<0.001).As regard to temperature showed that highly significant decrease in study group versus study group (p<0.001) (37.69±0.49 &38. 59±0.42). Conclusion applying standard nursing care was more effective to reduce postoperative pulmonary complication after thoracotomy in study group versus control group who received routine hospital care.